A boat refueling at a Manorhaven marina went up in flames after it exploded, killing one man, forcing another to jump into the water and burning a dock worker who got the drifting, fiery vessel away from shore, authorities said.

The vessel’s owner and one passenger were on the boat at the Manhasset Bay Marina at Matinecock Avenue when the vessel exploded at 2:49 p.m., said Det. Lt. John Azzata of the Nassau police homicide squad.

“During the fueling process, the boat exploded,” he said. “The passenger jumped to safety. The owner of the boat is deceased.”